GPS and Xbee

[bobWalt]

Hey guys I am using labview for a school probject and as part of it I have to transfer data of the location from a myrio using a GPS sensor. 

Does anyone know any good places on where to start as far as information about this?  It's kinda diffcult to find anyinformation on this, without using arduino, which I am not.  I am just using the myrio.

Thank you

Bobbie

[LordNobady]

GPS usaly is send over as NMEA string. ( http://en.wikipedia.org/wiki/NMEA_0183 )

there are examples for the serial protocol. 

If I am not mistaken most Xbee modules also interface as serial protocol. 

[chrylarson]

Found this myRIO and GPS demo the other day.
http://www.youtube.com/watch?v=SebcpkbYBd4

[bobWalt]

How does he get -1 in his property node.  It only lets me to go to zero.

[Matthew-B]

Hi bobWalt,

It's really hard to see, but I'm pretty certain there's a coercion dot on there. The Text.ScrollPos property node is an unsigned integer, so a -1 will be coerced to 0.

Best Regards,

[JÞB]

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@Matthew-B wrote:

Hi bobWalt,

It's really hard to see, but I'm pretty certain there's a coercion dot on there. The Text.ScrollPos property node is an unsigned integer, so a -1 will be coerced to 0.

Best Regards,

---

---

try that again Matthew

wiring the -1 to the scroll pos property, and letting it be coerced intentionally, is a common work-around to always scroll to last line.  This often contains the most recient information when you append to a string rather than prepend.

[bobWalt]

Ok guys I ran the code as 0, and now i'm getting following error:

 

[bobWalt]

I looked up the error as shown above but i am not getting the following timeout error:

http://digital.ni.com/public.nsf/allkb/874B379E24C0A0D686256FCF007A6EA0

[JÞB]

That usually means you have a connection problem:

• Wrong COM Port
• Wrong Serial cable (NULL modem / Straight patch)
• Wrong port settings
• External device turned off/not configured/

Looking at the vi: the first thing you do is read from the port.  Most devices don't just "spew data" out a serial port.  What is the device and have you read the user's manual?  User's manuals are like text books- you won't learn much about the subject without reading them

[bobWalt]

Wrong Serial cable (NULL modem / Straight patch)

for clairification what does the mean?

and the gps in question is a adafruit ultimate gps breakout see below

http://www.adafruit.com/products/746#Technical_Details

I intially did get one reading out of it.  And then when i returned to the code i kept getting the error above.

Bobbie!